Moisture content and noise levels are two of the major and recurring issues surrounding floating timber floors, impacting on their performance across many residential and commercial environments.

Dunlop Acoustic Underlay for timber floors has gone through extensive testing by the CSIRO to determine the acoustic performance and compliance with the standard set by the BCA. Dunlop's timber flooring underlay is all exceed the standard. Dunlop timber flooring underlays are Australian made and guaranteed.
Aquacoustic flooring underlay provides unsurpassed acoustic performance. Incorporating a 200 micron moisture resistant barrier, it also offers superior moisture protection. Recommended for use with most common engineered wood and solid timber floating floors where superior noise reduction, moisture protection and resilience is required. Dunlop Aquacoustic is treated with one of the world's leading antimicrobial agents Ultra-Fresh which offers protection from mould, mildew, fungi and bacterial growth for a more hygienic environment.

The terms to describe the impact sound insulation of the floor is "weighted normalised impact sound pressure level" (Ln,w) plus "spectrum adaptation" (C1). The lower the Ln,w + C1 for the flooring assembly, the better the performance of the floor in terms of impact sound insulation.